Hello TT’ler, maybe one of you can help me. Have already tried the search function, but will not find quite related to my problem. I have since we have temperatures of over 30°C, a strange phenomenon with my air conditioning in my TT. And indeed after some driving distance at high outside temperatures it is so that in the vehicle suddenly such a kind of hum noise occurs and shortly afterwards the air conditioning is dropped. A few seconds later the Mag This spectacle repeats itself several times within a very short time. Understood is the whole through the fans running up and down. I noticed this behavior so far only in idle mode and in the lower partial load mode. If the temperatures in the evenings drop again to values of approx. 25°C, the described behavior no longer occurs and the air conditioning behaves absolutely normal. What could be the result of this ? Perhaps. Exp ansion valve, overpressure switch (too much refrigerant in the circuit) ? Would be very grateful for your advice.